Question

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Part 1
Claire traveled 327 miles. She drove 90 miles every day. On the last day of her trip she only drove 57 miles. Write and solve an equation to find the number of days Claire traveled. Explain each step of your problem solving strategy.
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Part 1
​First, subtract to find the number of miles Claire traveled on the days she drove 90 miles per day.
327minus57equals
  
270
Part 2
​Now, let d be the number of days Claire traveled 90 miles. What equation can be used to find the number of days Claire​ traveled?
90dequals327
90dequals270
Your answer is correct.
57dequals327
57dequals270
Part 3
Solve for d.
dequals
  
enter your response here
32757What equation can be used to find the number of days Claire traveled?d

Answer 1

Step 1 — remove the last partial day:
327 − 57 = 270 (miles driven on the full 90‑mile days).

Step 2 — write an equation for the full days:
Let d = number of 90‑mile days. Then 90d = 270 (or equivalently 90d + 57 = 327).

Step 3 — solve for d:
d = 270 ÷ 90 = 3.

So Claire drove 3 full 90‑mile days, plus the last partial day, for a total of 3 + 1 = 4 days.